Update recommended NDK version to 19c (kivy#2116)

inclement · web-flow · commit f5dbf219aac1 · 2020-03-31T18:57:09.000+01:00
Probably newer versions are also fine, but making this change in particular because the buildozer download url for 19b no longer exists. I think the 19c one should work fine though.
diff --git a/pythonforandroid/recommendations.py b/pythonforandroid/recommendations.py
@@ -12,7 +12,7 @@
 MAX_NDK_VERSION = 20
 
 # DO NOT CHANGE LINE FORMAT: buildozer parses the existence of a RECOMMENDED_NDK_VERSION
-RECOMMENDED_NDK_VERSION = "19b"
+RECOMMENDED_NDK_VERSION = "19c"
 
 NDK_DOWNLOAD_URL = "https://developer.android.com/ndk/downloads/"
 
